<template>
    <div id="aCoursesList" class="bg-fa of">
        <!-- /课程详情 开始 -->
        <section class="container">
            <section class="path-wrap txtOf hLh30">
                <a href="#" title class="c-999 fsize14">首页</a>
                \
                <a href="#" title class="c-999 fsize14">{{courseWebVo.subjectLevelOne}}</a>
                \
                <span class="c-333 fsize14">{{courseWebVo.subjectLevelTwo}}</span>
            </section>
            <div>
                <article class="c-v-pic-wrap" style="height: 357px;">
                    <section class="p-h-video-box" id="videoPlay">
                        <img height="357px" :src="courseWebVo.cover" :alt="courseWebVo.title" class="dis c-v-pic">
                    </section>
                </article>
                <aside class="c-attr-wrap">
                    <section class="ml20 mr15">
                        <h2 class="hLh30 txtOf mt15">
                            <span class="c-fff fsize24">{{courseWebVo.title}}</span>
                        </h2>
                        <section class="c-attr-jg">
                            <span class="c-fff">价格：</span>
                            <b class="c-yellow" style="font-size:24px;">￥{{courseWebVo.price}}</b>
                        </section>
                        <section class="c-attr-mt c-attr-undis">
                            <span class="c-fff fsize14">主讲： {{courseWebVo.teacherName}}&nbsp;&nbsp;&nbsp;</span>
                        </section>
                        <section class="c-attr-mt of">
              <span class="ml10 vam">
                <em class="icon18 scIcon"></em>
                <a class="c-fff vam" title="收藏" href="#">收藏</a>
              </span>
                        </section>
                        <section v-if="isbuy || Number(courseWebVo.price) === 0" class="c-attr-mt">
                            <a href="#" title="立即观看" class="comm-btn c-btn-3">立即观看</a>
                        </section>
                        <section v-else class="c-attr-mt">
                            <a @click="createOrders()" href="#" title="立即购买" class="comm-btn c-btn-3">立即购买</a>
                        </section>
                    </section>
                </aside>
                <aside class="thr-attr-box">
                    <ol class="thr-attr-ol">
                        <li>
                            <p>&nbsp;</p>
                            <aside>
                                <span class="c-fff f-fM">购买数</span>
                                <br>
                                <h6 class="c-fff f-fM mt10">{{courseWebVo.buyCount}}</h6>
                            </aside>
                        </li>
                        <li>
                            <p>&nbsp;</p>
                            <aside>
                                <span class="c-fff f-fM">课时数</span>
                                <br>
                                <h6 class="c-fff f-fM mt10">20</h6>
                            </aside>
                        </li>
                        <li>
                            <p>&nbsp;</p>
                            <aside>
                                <span class="c-fff f-fM">浏览数</span>
                                <br>
                                <h6 class="c-fff f-fM mt10">501</h6>
                            </aside>
                        </li>
                    </ol>
                </aside>
                <div class="clear"></div>
            </div>
            <!-- /课程封面介绍 -->
            <div class="mt20 c-infor-box">
                <article class="fl col-7">
                    <section class="mr30">
                        <div class="i-box">
                            <div>
                                <section id="c-i-tabTitle" class="c-infor-tabTitle c-tab-title">
                                    <a name="c-i" class="current" title="课程详情">课程详情</a>
                                </section>
                            </div>
                            <article class="ml10 mr10 pt20">
                                <div>
                                    <h6 class="c-i-content c-infor-title">
                                        <span>课程介绍</span>
                                    </h6>
                                    <div class="course-txt-body-wrap">
                                        <section class="course-txt-body">
                                            <p v-html="courseWebVo.description">{{courseWebVo.description}}</p>
                                        </section>
                                    </div>
                                </div>
                                <!-- /课程介绍 -->
                                <div class="mt50">
                                    <h6 class="c-g-content c-infor-title">
                                        <span>课程大纲</span>
                                    </h6>
                                    <section class="mt20">
                                        <div class="lh-menu-wrap">
                                            <menu id="lh-menu" class="lh-menu mt10 mr10">
                                                <ul>
                                                    <!-- 文件目录 -->
                                                    <li class="lh-menu-stair" v-for="chapter in chapterVideoList"
                                                        :key="chapter.id">
                                                        <a href="javascript: void(0)" :title="chapter.title"
                                                           class="current-1">
                                                            <em class="lh-menu-i-1 icon18 mr10"></em>{{chapter.title}}
                                                        </a>

                                                        <ol class="lh-menu-ol" style="display: block;">
                                                            <li class="lh-menu-second ml30"
                                                                v-for="video in chapter.children" :key="video.id">
                                                                <a :href="'/player/'+video.videoSourceId"
                                                                   target="_blank">
                                  <span class="fr">
                                    <i class="free-icon vam mr10">免费试听</i>
                                  </span>
                                                                    <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>{{video.title}}
                                                                </a>
                                                            </li>

                                                        </ol>

                                                    </li>
                                                </ul>
                                            </menu>
                                        </div>
                                    </section>
                                </div>
                                <!-- /课程大纲 -->
                            </article>
                        </div>
                    </section>
                </article>
                <aside class="fl col-3">
                    <div class="i-box">
                        <div>
                            <section class="c-infor-tabTitle c-tab-title">
                                <a title href="javascript:void(0)">主讲讲师</a>
                            </section>
                            <section class="stud-act-list">
                                <ul style="height: auto;">
                                    <li>
                                        <div class="u-face">
                                            <a href="#">
                                                <img :src="courseWebVo.avatar" width="50" height="50" alt>
                                            </a>
                                        </div>
                                        <section class="hLh30 txtOf">
                                            <a class="c-333 fsize16 fl" href="#">{{courseWebVo.teacherName}}</a>
                                        </section>
                                        <section class="hLh20 txtOf">
                                            <span class="c-999">{{courseWebVo.intro}}</span>
                                        </section>
                                    </li>
                                </ul>
                            </section>
                        </div>
                    </div>
                </aside>
                <div class="clear"></div>
            </div>
        </section>
        <!-- /课程详情 结束 -->
    </div>
</template>

<script>
    import courseApi from '@/api/course'
    import ordersApi from '@/api/orders'

    export default {
        asyncData({params, error}) {
            return {courseId: params.id}
        },
        data() {
            return {
                courseWebVo: {},
                chapterVideoList: [],
                isbuy: false,
            }
        },
        created() {//在页面渲染之前执行
            this.initCourseInfo()
        },
        methods: {
            //查询课程详情信息
            initCourseInfo() {
                courseApi.getCourseInfo(this.courseId)
                    .then(response => {
                        this.courseWebVo = response.data.data.courseWebVo,
                            this.chapterVideoList = response.data.data.chapterVideoList,
                            this.isbuy = response.data.data.isBuy
                    })
            },
            //生成订单
            createOrders() {
                ordersApi.createOrders(this.courseId)
                    .then(response => {
                        //获取返回订单号
                        //生成订单之后，跳转订单显示页面
                        this.$router.push({path: '/orders/' + response.data.data.orderId})
                    })
            }
        }
    };
</script>
